org.dbxml.core.filer
Class FSFiler

java.lang.Object
  |
  +--org.dbxml.server.SimpleConfigurable
        |
        +--org.dbxml.core.filer.FSFiler

All Implemented Interfaces:

org.dbxml.server.Configurable, DBObject, Filer, org.dbxml.server.Named

public final class FSFiler

extends org.dbxml.server.SimpleConfigurable

implements Filer

FSFiler allows you to use existing file systems withing dbXML.

Constructor Summary

FSFiler()

Method Summary

boolean	close() close closes the DBObject
boolean	create() create creates a new DBObject and any associated resources for the new DBObject, such as disk files, etc.
boolean	deleteRecord(Key key) deleteRecord removes a Record from the Filer based on the specified Key.
boolean	drop() drop instructs the DBObjectimplementation to remove itself from existence.
boolean	exists() exists returns whether or not a physical representation of this DBObject actually exists.
java.lang.String	getName()
long	getRecordCount() getRecordCount returns the number of Records in the Filer.
RecordSet	getRecordSet() getRecordSet returns a RecordSet object for the current Filer.
boolean	isOpened() isOpened returns whether or not the DBObject is opened for business.
boolean	open() open opens the DBObject
Record	readRecord(Key key) readRecord returns a Record from the Filer based on the specified Key.
void	setCollection(Collection collection) setCollection tells the Filer who its parent is.
void	setConfig(org.dbxml.server.Configuration config)
boolean	writeRecord(Key key, Value value) writeRecord writes a Value to the Filer based on the specified Key.

Methods inherited from class org.dbxml.server.SimpleConfigurable

getConfig

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.dbxml.server.Configurable

getConfig

Constructor Detail

FSFiler

public FSFiler()

Method Detail

getName

public java.lang.String getName()

Specified by:

getName in interface org.dbxml.server.Named

setCollection

public void setCollection(Collection collection)

Description copied from interface: Filer

setCollection tells the Filer who its parent is.

Specified by:

setCollection in interface Filer

Following copied from interface: org.dbxml.core.filer.Filer

Parameters:

collection - The owner Collection

setConfig

public void setConfig(org.dbxml.server.Configuration config)
               throws org.dbxml.server.dbXMLException

Specified by:

setConfig in interface org.dbxml.server.Configurable

Overrides:

setConfig in class org.dbxml.server.SimpleConfigurable

close

public boolean close()

Description copied from interface: DBObject

close closes the DBObject

Specified by:

close in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

Whether or not the DBObject was closed

open

public boolean open()

Description copied from interface: DBObject

open opens the DBObject

Specified by:

open in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

Whether or not the DBObject was opened

drop

public boolean drop()

Description copied from interface: DBObject

drop instructs the DBObjectimplementation to remove itself from existence. The DBObject's parent is responsible for removing any references to the DBObject in its own context.

Specified by:

drop in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

Whether or not the DBObject was dropped

isOpened

public boolean isOpened()

Description copied from interface: DBObject

isOpened returns whether or not the DBObject is opened for business.

Specified by:

isOpened in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

The open status of the DBObject

exists

public boolean exists()

Description copied from interface: DBObject

exists returns whether or not a physical representation of this DBObject actually exists. In the case of a HashFiler, this would check for the file, and in the case of an FTPFiler, it might perform a connection check.

Specified by:

exists in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

Whether or not the physical resource exists

create

public boolean create()

Description copied from interface: DBObject

create creates a new DBObject and any associated resources for the new DBObject, such as disk files, etc.

Specified by:

create in interface DBObject

Following copied from interface: org.dbxml.core.DBObject

Returns:

Whether or not the DBObject was created

readRecord

public Record readRecord(Key key)
                  throws DBException

Description copied from interface: Filer

readRecord returns a Record from the Filer based on the specified Key.

Specified by:

readRecord in interface Filer

Following copied from interface: org.dbxml.core.filer.Filer

Parameters:

key - The Record's Key

Returns:

The returned Record

writeRecord

public boolean writeRecord(Key key,
                           Value value)
                    throws DBException

Description copied from interface: Filer

writeRecord writes a Value to the Filer based on the specified Key.

Specified by:

writeRecord in interface Filer

Following copied from interface: org.dbxml.core.filer.Filer

Parameters:

key - The Record's Key

value - The Record's Value

Returns:

Whether or not the Record could be written

deleteRecord

public boolean deleteRecord(Key key)
                     throws DBException

deleteRecord removes a Record from the Filer based on the specified Key.

Specified by:

deleteRecord in interface Filer

Parameters:

key - The Record's Key

Returns:

Whether or not the Record was deleted

getRecordCount

public long getRecordCount()
                    throws DBException

Description copied from interface: Filer

getRecordCount returns the number of Records in the Filer.

Specified by:

getRecordCount in interface Filer

Following copied from interface: org.dbxml.core.filer.Filer

Returns:

The Record count

getRecordSet

public RecordSet getRecordSet()
                       throws DBException

Description copied from interface: Filer

getRecordSet returns a RecordSet object for the current Filer.

Specified by:

getRecordSet in interface Filer

Following copied from interface: org.dbxml.core.filer.Filer

Returns:

The Filer Enumerator